CVE-2026-81649 Fundiin <= 3.4.0 - Unauthenticated Payment Gateway Settings Update and Credential Disclosure
Unauthenticated attackers can access payment credentials, modify gateway settings, and inject stored XSS due to missing authorization on REST API routes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81649?
CVE-2026-81649 is a critical missing authorization vulnerability in Unknown Fundiin cho WooCommerce, published on 11 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Fundiin cho WooCommerce WordPress plugin through 3.4.0 does not have proper authorisation on several of its REST API routes, relying instead on a credential that is identical on every installation, allowing unauthenticated attackers to disclose the store's payment credentials and customer order data, overwrite the payment gateway configuration so that payments are credited elsewhere, and mark unpaid orders as paid. The same missing authorisation also allows arbitrary script to be stored in a field which is output unescaped on the classic checkout, leading to unauthenticated stored XSS on stores that do not use the block-based checkout.
Weakness: CWE-863
Which versions are affected by CVE-2026-81649?
How do I fix CVE-2026-81649?
No fix has been published for CVE-2026-81649 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-81649 being exploited?
There is no known exploitation of CVE-2026-81649 in the wild and no public exploit code.
Sources
Also known as GHSA-v54w-6hqg-rx6f.